| Crank-Nicolson |
| FILE:code.1dheat4 1d heat flow, time dependent, Crank-Nicolson, unconditionally stable |
| Compression: RLE, Run Length Encoding |
| Compression: 256 color map: 3 bytes --> 1 byte |
| Compression: Huffman codes |
| Compression: Lempel-Ziv-Welch code , zip, gzip, bz2, zlib, gif, patents |
| Redundancy parity, checksums, CRC codesi, ECC codes |
| Credit Card numbers Luhn algorithm |
| Hashes, hash functions |
| md5 hash/digest |
| Encryption: Symmetric key |
| Encryption: DES and how to break it |
| Encryption: Diffie-Hellman public key |
| Encryption: ssh, ssh-keygen, rsync, https |
| ffmpeg |